A water balance device for a rotary printing press

Abstract

The utility model discloses a rotogravure press printing ink balance device, including base, the bottom end symmetry fixed of base is equipped with linear push mechanism, two the output of linear push mechanism is fixedly connected the both ends of connecting block respectively, the inner wall of connecting block is connected with ink roll through bearing, the bottom end symmetry fixed of base is equipped with L type block, L type block is detachably fixed with fixed block through fixing device, two fixed block are equipped with printing cylinder through bearing in. The utility model discloses through linear push mechanism can accurate control ink roll before and after displacement's distance, make ink roll and printing cylinder keep stable contact pressure, can avoid because contact too loose leads to ink quantity uneven, or too tight causes ink splashing etc. problem, can stable control ink layer thickness, guarantee printing color fullness, halftone clear, reduce paste edition, smudge etc. printing defect.

Description

Technical Field

[0001] This utility model relates to the field of printing technology, specifically to a water-ink balancing device for a rotary printing press. Background Technology

[0002] As the core equipment for large-scale printing production, the printing quality of rotary printing presses is directly related to the ink-water balance. The essence of ink-water balance is to achieve a clear, clean, and unblemished printing effect by precisely controlling the contact ratio between the ink roller and the printing cylinder.

[0003] Existing rotary printing press ink balancing devices rely heavily on mechanical linkages or manual knobs for ink roller position adjustment. This results in low adjustment precision and difficulty in achieving synchronous displacement at both ends of the ink roller. Uneven pressure between the roller surface and the printing cylinder can lead to uneven ink flow, with one end having more ink than water and the other less ink than water, causing localized smudging or dot loss on the printed product. Furthermore, the traditional fixed structure of the printing cylinder, as a core component, is complex, requiring significant downtime for replacement and cumbersome operation, thus reducing production efficiency. Therefore, these existing methods do not meet the current requirements. To address this, we propose a rotary printing press ink balancing device. Utility Model Content

[0004] The purpose of this utility model is to provide a printing ink balancing device for a rotary printing press, in order to solve the problems mentioned in the background art. The ink roller position adjustment of the existing rotary printing press ink balancing devices mostly relies on mechanical linkages or manual knob operation, which has low adjustment accuracy and makes it difficult to achieve synchronous displacement of both ends of the ink roller. This easily leads to uneven contact pressure between the roller surface and the printing cylinder, resulting in problems such as one end having more ink than water and the other end having less ink than water, causing local smudges or dot loss on the printed products. In addition, the printing cylinder, as a core component, has a relatively complex traditional fixing structure, which results in long downtime for replacement and cumbersome operation, thus reducing production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rotary printing press ink balancing device, comprising a base, with linear pushing mechanisms symmetrically fixed at the bottom end of the base, the output ends of the two linear pushing mechanisms respectively fixedly connected to the two ends of a connecting block, an ink roller connected to the inner wall of the connecting block via bearings, an L-shaped block symmetrically fixed at the bottom end of the base, a fixing block detachably fixed to the L-shaped block via a fixing device, and a printing cylinder provided within the two fixing blocks via bearings.

[0006] Preferably, the ink roller and the printing cylinder are driven by the transmission system of the printing machine, and the rotational speeds of the ink roller and the printing cylinder are matched and synchronously contacted. The base is fixed to the printing machine by bolts.

[0007] Preferably, the linear actuation mechanism includes a motor support base, a motor, a lead screw, a slider, a slide bar, and a connecting plate. The slider is the output end of the linear actuation mechanism and is fixedly connected to one end of the connecting block. The motor support base and the connecting plate are symmetrically fixed on both sides of the bottom end of the base. A motor is fixedly mounted on one end of the motor support base, and multiple sets of slide bars are fixedly mounted on the other end of the motor support base and inside the connecting plate. The output shaft of the motor is connected to the lead screw through a coupling. The lead screw is threaded with a slider on its outer surface. Both sides of the slider are slidably connected to the slide bars. The lead screw and the connecting plate are connected by bearings.

[0008] Preferably, one end of the L-shaped block is threaded with a screw, a limiting groove is provided through one side of the L-shaped block, and one end of the fixing block is provided with a threaded hole, a limiting ring and a rubber pad. The diameter of the limiting ring is larger than that of the threaded hole, and the diameter of the rubber pad is larger than that of the limiting ring. The fixing device includes a screw, a limiting groove, a threaded hole, a limiting ring and a rubber pad.

[0009] Preferably, the limiting ring of the fixing block is inserted into the limiting groove of the L-shaped block, the screw of the L-shaped block is threaded into the threaded hole of the fixing block, and the rubber pad of the fixing block is tightly fitted to the outer wall of the L-shaped block.

[0010] Preferably, an infrared moisture sensor corresponding to the printing cylinder is fixedly provided at the bottom end of the base for real-time monitoring of the ink content of the printing cylinder, so as to drive the linear push mechanism to drive the ink roller to contact the printing cylinder.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model can precisely control the distance of the ink roller's forward and backward displacement through a linear pushing mechanism, so that the ink roller and the printing cylinder maintain a stable contact pressure. This can avoid problems such as uneven ink volume due to excessively loose contact or ink splashing due to excessively tight contact. It can stably control the ink layer thickness, ensure full color and clear dots in the printed product, and reduce printing defects such as smearing and smudging.

[0013] 2. This utility model allows the printing cylinder to be detached and replaced through a fixing device, eliminating the need for complex disassembly of the entire machine. A single person can complete the replacement operation, unlike traditional solid rollers which require overhead cranes and multiple personnel. This design also significantly reduces cylinder replacement time, minimizes downtime, and lowers labor and equipment costs.

[0014] 3. By replacing printing cylinders of different specifications and cooperating with the linear drive mechanism to flexibly adjust the ink rollers, this utility model can adapt to various printing materials such as film, paper, and self-adhesive labels. It can also quickly switch between orders with different printing patterns and sizes. This makes it highly adaptable to the personalized and short-running needs of modern printing, and improves the overall utilization rate of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a side view of the entire utility model;

[0017] Figure 3 This is a partial structural diagram of the L-shaped block of this utility model;

[0018] Figure 4 This is a partial structural schematic diagram of the printing cylinder of this utility model.

[0019] In the diagram: 1. Base; 2. Linear push mechanism; 3. Connecting block; 4. Ink roller; 5. L-shaped block; 6. Fixing device; 7. Fixing block; 8. Printing cylinder; 9. Motor support base; 10. Motor; 11. Lead screw; 12. Slider; 13. Slide rod; 14. Connecting plate; 15. Screw; 16. Limiting groove; 17. Threaded hole; 18. Limiting ring; 19. Rubber pad. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1 to 4 This utility model provides an embodiment of a rotary printing press ink balancing device, comprising a base 1, with linear push mechanisms 2 symmetrically fixed at the bottom end of the base 1. The output ends of the two linear push mechanisms 2 are respectively fixedly connected to the two ends of a connecting block 3. The linear push mechanism 2 includes a motor support 9, a motor 10, a lead screw 11, a slider 12, a slide rod 13, and a connecting plate 14. The slider 12 is the output end of the linear push mechanism 2, and the slider 12 is fixedly connected to one end of the connecting block 3. The motor support 9 and the connecting plate 14 are symmetrically fixed on both sides of the bottom end of the base 1. The motor 10 is fixedly mounted on one end of the motor support 9, and multiple sets of slide rods 13 are fixedly mounted on the other end of the motor support 9 and inside the connecting plate 14. The output shaft of the motor 10 is connected to the lead screw 11 through a coupling. The outer surface of the lead screw 11 is threaded with the slider 12. Both sides of the slider 12 are slidably connected to the slide rods 13. The lead screw 11 and the connecting plate 14 are connected by bearings.

[0022] The inner wall of the connecting block 3 is connected to the ink roller 4 via a bearing. The bottom end of the base 1 is symmetrically fixed with an L-shaped block 5. The L-shaped block 5 is detachably fixed with a fixing block 7 via a fixing device 6. One end of the L-shaped block 5 is threaded with a screw 15. A limiting groove 16 is provided through one side of the L-shaped block 5. One end of the fixing block 7 is provided with a threaded hole 17, a limiting ring 18 and a rubber pad 19. The diameter of the limiting ring 18 is larger than that of the threaded hole 17, and the diameter of the rubber pad 19 is larger than that of the limiting ring 18. The fixing device 6 includes a screw 15, a limiting groove 16, a threaded hole 17, a limiting ring 18 and a rubber pad 19.

[0023] The limiting ring 18 of the fixing block 7 is inserted into the limiting groove 16 of the L-shaped block 5. The screw of the L-shaped block 5 is threaded into the threaded hole 17 of the fixing block 7. The rubber pad 19 of the fixing block 7 is tightly attached to the outer wall of the L-shaped block 5. The printing cylinder 8 is provided in the two fixing blocks 7 through the bearing.

[0024] The ink roller 4 and the printing cylinder 8 are driven by the transmission system of the printing press, and the rotation speeds of the ink roller 4 and the printing cylinder 8 are matched and synchronously contacted. The base 1 is fixed to the printing press by bolts.

[0025] An infrared moisture sensor corresponding to the printing cylinder 8 is fixedly installed at the bottom of the base 1 to monitor the ink content of the printing cylinder 8 in real time, so as to drive the linear push mechanism 2 to drive the ink roller 4 to contact the printing cylinder 8.

[0026] The fixing block 7 is fixed to the L-shaped block 5 on the base 1 by the fixing device 6. The limiting ring 18 of the fixing block 7 is inserted into the limiting groove 16 of the L-shaped block 5. The screw of the L-shaped block 5 is screwed into the threaded hole 17 of the fixing block 7, so that the rubber pad 19 of the fixing block 7 fits tightly against the outer wall of the L-shaped block 5. The linear push mechanism 2 drives the ink roller 4 to contact the printing cylinder 8 according to the infrared moisture sensor of the corresponding printing cylinder 8. The motor 10 of the linear push mechanism 2 drives the lead screw 11 to drive the slider 12 to slide on the slide bar 13. The slider 12 drives the ink roller 4 in the connecting block 3 to move.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A printing ink balancing device for a rotary printing press, comprising a base (1), characterized in that: The base (1) is symmetrically fixed with linear push mechanism (2) at the bottom end. The output ends of the two linear push mechanisms (2) are respectively fixedly connected to the two ends of the connecting block (3). The inner wall of the connecting block (3) is connected with ink roller (4) through bearing. The base (1) is symmetrically fixed with L-shaped block (5). The L-shaped block (5) is detachably fixed with fixing block (7) through fixing device (6). The two fixing blocks (7) are provided with printing cylinder (8) through bearing.

2. The ink-water balancing device for a rotary printing press according to claim 1, characterized in that: The ink roller (4) and the printing cylinder (8) are driven by the transmission system of the printing machine, and the rotation speeds of the ink roller (4) and the printing cylinder (8) are matched and synchronously contacted. The base (1) is fixed to the printing machine by bolts.

3. The ink-water balancing device for a rotary printing press according to claim 1, characterized in that: The linear push mechanism (2) includes a motor support base (9), a motor (10), a lead screw (11), a slider (12), a slide bar (13), and a connecting plate (14). The slider (12) is the output end of the linear push mechanism (2), and the slider (12) is fixedly connected to one end of the connecting block (3). The motor support base (9) and the connecting plate (14) are symmetrically fixed on both sides of the bottom end of the base (1). The motor (10) is fixedly installed at one end of the motor support base (9). Multiple sets of slide bars (13) are fixedly installed at the other end of the motor support base (9) and inside the connecting plate (14). The output shaft of the motor (10) is connected to the lead screw (11) through a coupling. The slider (12) is threaded on the outer surface of the lead screw (11). Both sides of the slider (12) are slidably connected to the slide bar (13). The lead screw (11) and the connecting plate (14) are connected by bearings.

4. The ink-water balancing device for a rotary printing press according to claim 1, characterized in that: One end of the L-shaped block (5) is threaded with a screw (15), and a limiting groove (16) is provided through one side of the L-shaped block (5). One end of the fixing block (7) is provided with a threaded hole (17), a limiting ring (18) and a rubber pad (19). The diameter of the limiting ring (18) is larger than that of the threaded hole (17), and the diameter of the rubber pad (19) is larger than that of the limiting ring (18). The fixing device (6) includes a screw (15), a limiting groove (16), a threaded hole (17), a limiting ring (18) and a rubber pad (19).

5. The ink-water balance device for a rotary printing press according to claim 4, characterized in that: The limiting ring (18) of the fixing block (7) is inserted into the limiting groove (16) of the L-shaped block (5), the screw of the L-shaped block (5) is threadedly connected to the threaded hole (17) of the fixing block (7), and the rubber pad (19) of the fixing block (7) is tightly attached to the outer wall of the L-shaped block (5).

6. The ink-water balancing device for a rotary printing press according to claim 1, characterized in that: The base (1) is fixedly provided with an infrared moisture sensor corresponding to the printing cylinder (8) at the bottom end, which is used to monitor the ink content of the printing cylinder (8) in real time, so as to drive the linear push mechanism (2) to drive the ink roller (4) to contact the printing cylinder (8).

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